Milwaukee® Tool 48-89-2801 Thunderbolt® Secure-Grip™ Drill Bit Set, 21 Pieces, Black Oxide

Extreme durability - thicker web provides greater strength and longer life Fast, accurate drilling - 135 deg split point tip starts on contact to prevent walking while the parabolic flute clears chips fast Reduced slipping - 3-flat Secure-Grip™ shank holds the bit firmly in the drill chuck Versatile - reduced shank diameter for use in 3/8 in chucks Corrosion-resistant - black oxide coating provides lubricity and resists corrosion of the bit